Thomas Cauwelier / Mbed 2 deprecated visible_light_communication

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Dependencies:   SoftSerial SDFileSystem mbed wave_player

main.cpp@3:f128424d2e80, 2017-05-02 (annotated)

Committer:
thoma@THOMAS-CAUWELIER.khbo.be
Date:
Tue May 02 19:20:21 2017 +0200
Revision:
3:f128424d2e80
Parent:
1:6b839581dc9f
Child:
4:a07612fbf279
add manchester

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Desertification 1:6b839581dc9f 1
Desertification 1:6b839581dc9f 2 #include "mbed.h"
Desertification 1:6b839581dc9f 3
Desertification 1:6b839581dc9f 4 int main() {
thoma@THOMAS-CAUWELIER.khbo.be 3:f128424d2e80 5 printf("%s", "hello, term");
Desertification 1:6b839581dc9f 6 }
Desertification 1:6b839581dc9f 7
Desertification 1:6b839581dc9f 8
Desertification 1:6b839581dc9f 9
Desertification 1:6b839581dc9f 10
Desertification 1:6b839581dc9f 11 /** A serial port (UART) for communication with other serial devices
Desertification 1:6b839581dc9f 12 *
Desertification 1:6b839581dc9f 13 * Can be used for Full Duplex communication, or Simplex by specifying
Desertification 1:6b839581dc9f 14 * one pin as NC (Not Connected)
Desertification 1:6b839581dc9f 15 *
Desertification 1:6b839581dc9f 16 * This uses software serial emulation, regular serial pins are alot better,
Desertification 1:6b839581dc9f 17 * however if you don't have spare ones, you can use this. It is advicable
Desertification 1:6b839581dc9f 18 * to put the serial connection with highest speed to hardware serial.
Desertification 1:6b839581dc9f 19 *
Desertification 1:6b839581dc9f 20 * If you lack RAM memory you can also use SoftSerial without this buffer around it.
Desertification 1:6b839581dc9f 21 * In that case it is fully blocking.
Desertification 1:6b839581dc9f 22 *
Desertification 1:6b839581dc9f 23 * Example:
Desertification 1:6b839581dc9f 24 * @code
Desertification 1:6b839581dc9f 25 * #include "mbed.h"
Desertification 1:6b839581dc9f 26 * #include "BufferedSoftSerial.h"
Desertification 1:6b839581dc9f 27 *
Desertification 1:6b839581dc9f 28 * SoftSerial block(USBTX, USBRX);
Desertification 1:6b839581dc9f 29 * BufferedSoftSerial buf(USBTX, USBRX);
Desertification 1:6b839581dc9f 30 *
Desertification 1:6b839581dc9f 31 * int main()
Desertification 1:6b839581dc9f 32 * {
Desertification 1:6b839581dc9f 33 * while(1) {
Desertification 1:6b839581dc9f 34 * Timer s;
Desertification 1:6b839581dc9f 35 *
Desertification 1:6b839581dc9f 36 * s.start();
Desertification 1:6b839581dc9f 37 * buf.printf("Hello World - buffered\r\n");
Desertification 1:6b839581dc9f 38 * int buffered_time = s.read_us();
Desertification 1:6b839581dc9f 39 * wait(0.1f); // give time for the buffer to empty
Desertification 1:6b839581dc9f 40 *
Desertification 1:6b839581dc9f 41 * s.reset();
Desertification 1:6b839581dc9f 42 * block.printf("Hello World - blocking\r\n");
Desertification 1:6b839581dc9f 43 * int polled_time = s.read_us();
Desertification 1:6b839581dc9f 44 * s.stop();
Desertification 1:6b839581dc9f 45 * wait(0.1f); // give time for the buffer to empty
Desertification 1:6b839581dc9f 46 *
Desertification 1:6b839581dc9f 47 * buf.printf("printf buffered took %d us\r\n", buffered_time);
Desertification 1:6b839581dc9f 48 * buf.printf("printf blocking took %d us\r\n", polled_time);
Desertification 1:6b839581dc9f 49 * wait(5);
Desertification 1:6b839581dc9f 50 * }
Desertification 1:6b839581dc9f 51 * }
Desertification 1:6b839581dc9f 52 **/